tedster - 2:15 am on Jul 31, 2010 (gmt 0)
numerous levels based on corporate divisions
That's a good one. I touched on that just a bit in the past but in a spotlight session it could well be expanded.
My basic advice, in a nutshell - information architecture is for visitors, not for in-house ease of use. Large corporates are notorious for having trouble using the web, and this is a bedrock factor.
There is a lot more I could say on this particular facet - and maybe even start some more fights during Q&A ;)